Plumber&#39;s furnace



April 25, 1933. w BERNZ ET AL 1,905,617

PLUMBERS FURNACE Filed Dec. 31, 1950 2 Sheets-Sheet 1 IN VE/Y 70/?5 i April 25, 1933. w BERNZ ET AL 1,905,617

PLUMBER S FURNACE Filed Dec. 31, 1930 2 Sheets-Sheet 2 Patented Apr. 1933 UNITED STATS rare 'oFFIcE I,

WILLIAM BERNZ, JAIVIES EDWARD FLITCROFT, AND JOSEPH M. IMFELD,.OFNEWARK,

NEW JERSEY, ASSIGNORS TO OTTO BERNZ CORPORATION OF NEW JERSEY co-.I1\To., or NEvrAaK, NEW JERSEY, A

PLUMBE-RS FURNACE Application filed December 31, 1930. Serial No. 505,783.

pipe and preheating coil are generally'ar-v ranged with their axes vertical, and the, burner nozzle is also arranged substantially coaxially with the preheating coil. The flame is generally controlled by a valve in the fuel supply pipe, but this flame control is unsatisfactory since it does not permit of an accurate and minute variation inthe size of the flame because in reducing the amount of fuel supply the fuel often is so far out olf as to completely extinguish the flame.

The objects of the invention are to provide a novel and improved furnace of this character having a vertically disposed preheating coil and combustion cup, a burner nozzle with its outlet substantially horizontally disposed, and means for deflecting the flame as it emerges horizontally from the burner nozzle into a substantially vertical path around the heating coil; to provide in such a furnace a valve for controlling the flow of fuel from the clearness in illustration;

Figure 2 is an enlarged vertical longitudinal sectional view through the flame deflector and flame control device;

Figure 3 is a fragmentary top plan view, on the line 33 of Figure 2;

Figures 4 and 5 are transverse vertical sec tional views, on'the respective lines 4-4 and 55 of Figure 2, and I Figure '6 is a fragmentary sectional elevation of the flame control device, showing it intheposition to reduce the flame to a minimum.

For the purpose of illustrating the principles of the invention, we have shown it in connection with afurnace of known general 6 construction, such as shown in Patent N 0. 1,678,316, dated July 24, 1928, said furnace comprising a tank or reservoir A which serves as a base for the furnace 'and from the top of which extend vertical rods or standards B to the top of which is secured as by nuts C atop plate or grid D. Beneath the top plate D is mounted a combustion cup E within whichis arranged a preheating coil F to one end of which is connected a burner nozzle G, the other end of said preheating coil being connected by a fuel pipe H through a valve I to the top of the tankA, The tank is provided with a filling opening K, and an air pump L by means of which the fuel is forced 7 through the fuel pipe H and the, preheating coil F. The general combination of the parts above described is known in the art andn'o claim to novelty is made thereon.

. As shown on'the drawings, the burner noz zle G is disposed atone side of and with its fuel outlet opening lin substantially horizontal position with respect to the axis ofthe preheating coil F. This nozzle is mounted: in a fitting 2 connected to the lower end of the preheating coil by a nipple3 upon which is mounted, integrally or separably as by a set screw 4:, a flame deflector 5'whi'ch consists of a spoon-shaped body having a flame deflecting surface 6 facing thej'outlet nozzle and concave in both longitudinal and transverse directionsso as to deflect a flame from .theburner' nozzle vertically upward around" the preheating coil F. The deflecting sur face 6' also gradually increases in widthor flares toward its upper end away from the nozzle, as clearlyshown in Figures 3' and 4 of the drawings. Where the flame defle'ctort is made as a separate part, it, preferably has "a lug 7 formed. with'a notch 8 to receive'fa" 10c and has connected thereto an operating wheel 12. The inner end of this rod has co-..

axially connected thereto a wire 13 of a size to pass loosely longitudinallythrough the nozzle orifice 1, and movement of the valve rod toward the nozzle orifice is limited by engagement of a shoulder 14 on the valve rod with an abutment 15 in the fitting 2. WVith this construction, it will be observed that the wheel 12 is disposed in a convenient position for operation.

In operation of the furnace, fuel is admitted to the preheating coil by opening the valve I, and this fuel is initially preheated by a small quantity of fuel ignited in the combustion cup E. lVhen the fuel in the preheating coil F has been properly vaporized it is ignited at the nozzle orifice 1, the wire 13 preferably having been withdrawn from the orifice by rotation of the wheel 12, as shown in Figure 2 of the drawings. The flame issuing from the orifice 1 in a horizontal direction strikes the deflecting surface of the flame deflector 6 and is directed vertically upward to the preheating coil, at the same time gradually flaring outwardly due to the upwardflare or increasing width of the defleeting surface 6, as shown in Figures 3. and 4 When it is desired to reduce the extent ofthe flame, the wheel 12 is rotated to move the wire 13 toward the orifice 1, and the fuel supply may or may not be somewhat out down by closing of the valve I. In this connection, it should be noted that the inner walls of the nozzle G flare inwardly away from the orifice 1, as at 17, so that the flame may be gradually decreased in size by a gradual cutting'down of the amount of vapor as the wire 13 approaches the orifice 1.

It should be noted that the orifice 1 is never completely closed by the wire 13, so.

the orifice, and of course the wire can be used for this purpose at any time regardless of whether'the flame control is desired or not.

VVhile we have shown and described the invention as embodied in certain details of construction, it should be understood that this is primarily for the purpose of illustrating the principles of the invention, and that many modifications and changes may be made, by those skilled in the art, in the details of construction without departing from the spirit and scope of the invention.

Having thus described the invention, what we claim is:

. 1. A plumbers furnace comprising a fuel tank, a preheating pipe including a'helical coil with its axis vertically disposed and con nected at its upper end to said tank, said pipe at the lower end of said coil having a portion disposed substantially horizontally, a burner nozzle connected to said horizontally disposed portion with its axis substantially horizontal and at one side of said coil to direct a flame from the orifice horizontally beneath said coil, and a flame deflector mounted on said horizontally disposed portion of said pipe in the path of said flame to deflect the flame vertically in substantially the axial line of said coil. 7

2. A plumbers furnace comprising a fuel tank, a preheating pipe including a helical coil with its axis vertically disposed and connected at its upper end to said: tank, said pipe at the lower end of said coil having a portion disposed substantially horizontally, a burner nozzle connected to said horizontally disposed portion with its axis substantially horizontal and at one side of said coil to direct a flame from the orifice horizontally beneath said coil, and a flame deflector mounted on said horizontally disposed portion of said pipe in the path of said flame to deflect the flame verticallyin substantially the axial line of said coil, said flame deflector having a deflecting surface curved in both longitudinal and transverse directions.

WILLIAM BERNZ. r J. EDWARD FLIT'CROFT. JOSEPH M. 'IMFELD. 

